点击下方单词,选择对的这个单词
1. the activity of exerting your muscles in various ways to keep fit
e.g. the doctor recommended regular exercisehe did some exercisingthe physical exertion required by his work kept him fit
Synonym: exercisephysical exercisephysical exertionworkout
多通过句子记忆单词，而不是单独死记硬背。
